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Estrogenic Effect of the Extract of QingYan Formula on Reproductive Tissues in Immature Mice. | LitMetric

Estrogenic Effect of the Extract of QingYan Formula on Reproductive Tissues in Immature Mice.

Evid Based Complement Alternat Med

Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China.

Published: January 2019

AI Article Synopsis

Article Abstract

A Chinese herbal preparation, QingYan formula (QYF), has been used clinically for kidney-invigorating. However, no evidence base links QYF to estrogen replacement therapy. In this study, the estrogenic effects of QingYan formula 70% ethanol extract (QYFE) were investigated in immature mice. Immature mice were treated with QYFE at doses of 1, 2, and 4g/kg for 7 days. QYFE treatments promoted vaginal cornification and prolonged the estrus status of the immature mice, promoted the growth and development of uterus and vagina, upregulated ER and ER expression at protein level in uterus and vagina, increased the level of estradiol (E), and decreased concentration of luteinizing hormone (LH) and follicle-stimulating hormone (FSH) in serum. This study demonstrated that QYFE exerts estrogenic effects by stimulating biosynthesis of estrogen and increasing estrogen receptors (ERs) in target tissues and provided an evidence base for QYFE treatment instead of estrogen replacement therapy.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6341256PMC
http://dx.doi.org/10.1155/2019/5493714DOI Listing

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